Release: Bump version to 10.3.0-pre (#76742)

"Release: Updated versions in package to 10.3.0-pre"

Co-authored-by: grafana-delivery-bot[bot] <132647405+grafana-delivery-bot[bot]@users.noreply.github.com>

plugins-bundled/internal/input-datasource/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@grafana-plugins/input-datasource",
-  "version": "10.3.0",
+  "version": "10.3.0-pre",
   "description": "Input Datasource",
   "private": true,
   "repository": {
@@ -28,8 +28,8 @@
     "webpack": "5.76.0"
   },
   "dependencies": {
-    "@grafana/data": "10.3.0",
-    "@grafana/ui": "10.3.0",
+    "@grafana/data": "10.3.0-pre",
+    "@grafana/ui": "10.3.0-pre",
     "react": "18.2.0",
     "tslib": "2.5.0"
   }